Fire-arch for furnaces.



PATBNTBD JMIG. 9, 1904.

D.- J. Mo FIRE AR-GH Y @KEN2-IB. 0R Emu-was.-

APPLIOATIH FILED D120.

l0 XODEL.

No. renace.

Patented August El, 190|.

PATENT Genion.

DGUGALJ. I'dCli-ENZE, 0F CHICAGO, ILLINOIS.

FllfeAFiOH FDF! FALNACES.

SPECIFICATION forming' part oi' Lettera Patent'. No. "$68,966, dated.August 1904.

l Application filed Iecamlmr 34, 1h03. 'Burial No. 188.433. (2bmonili...)

To 'HIL whom. it may concern:

ile it known that I, DoUoaL J. lliclaxzrr.,

a citizen of the United States, residing at Chilcago,.in the county ofCool: and State of ll-linois, have invented certain new and usefullmprovements in Fire-Arches for`l `urnaees, o-t' which the following' isa specification.

The invention relates to that: claas of fur` naees which are providedwith tirc-areiics across the front portion and above the lgrate, andparticularly tothe construction and arrangement of parts by which suchparte may be easily repaired and renewed, all of which will more fullyhereinafter appear.

The principal object of the invention is to providea simple, economical,and eiiicicnt fire arch for furnaces. l

Other and further objects ol the invention will appear from anexamination of the drawings and the followingdescription and claims.

The invention consiste principally in a lirearch for furnaces in .whichthere are cornbined a cross-beam arranged transversely across thefurnace, u plurality of inwardlyextending' brackets secured theretoandextendng inwardly therefrom, and a plurality oflongitudinally-disposed bars detaehably secured one to each of auchinwardly-extend ing brackets and tiredariek tiles detachably securedtoeach of such longitudinal beams.

The invention consists, further and tinally, in the fcatu res,combinations of details of construction hereinafter described andclaimed. In the accoxnpanyi'ng drawings, Figure 1 is a longitudinalsectional elevation of aiire-arch for furnaces as il; appears whenconstructed in accordance with these improvements.; Fig. 2, a.crosssectional elevation of the box-beam, showing a bracket .andlongitudinal beam as they appear in connection therewith and with allthe other parts removed; Fig. 3, a crosssectional elevation of a.lire-arch, taken about `line 3 of Fig. 2 looking in the direction of thearrow; Fig. 4, a sidefelevation of one of the longitudinal beams; Fig'.45, a plan view of the same; Fig. 6, a. cross-sectional. detail of one ofthe fire-bricks `.vith its metal insert; at the inner end of the arch,taken on line 6 of Fig. 3; Fig. 7, a cross-sectional elevation taken online 'i' of Fig. Q, and Fin. S a crosa- 5 sectional detail taken on line8 of Fig'. 2.

In illust rating and d'escribirnlr these improv@ menta l have onlyillustrated and will here describe that which l consider to be new,taken in connection with much as is old as is nec- SS csaary to properlydisclose the invention to others, leaving,r outo' consideration otherand well-known mechanisms which if illustrated and described hereinwould only tend to confusion, prolixity, and' ambiguity. 5

In constructing a tire-arch for furnaces in accordance with theecinnnmements I take a box-beam r1 and arrange it transversely aereas thefront portion of the furnace-chamber and above the .gratbars in anyusual or ordinary manner, all of which is so well known in the art thatit needs no further description or illust.` .tion herein. I next providea plurality'of supporting-brackets band secure them by means of bolt-nutmechanism c to the irl- 7 ner upper side of the boze-beam, as shown'particularly in Figs. Q and 3. These brackets, as above Stated, aresecured to the inner upper side of the box-imam and extend inwardly'thereroinmthat is. toward the rear ofthe furnace-chamber-and areprovided with dove. tail grooves o7 in the lower portions thereof.

A plurality of longitudinal beams e is pro vided, one for each of theinwardly-extending brackets, each of which basadovetail portion j',adapted to en gage with the dovetti-l grooves in the inwardly-extendingbrackets and be supported thereby. These longitudinal beams are of suchlength that they extend entirely under the box-benino and considerablyto the rear or inwardly from `the braekets,as shown particularly inFigs. 1 and 2. Their flanged. portions are notched or cut awa'y, as at;a, and are of :auch a length as to permit of ineertion or removal of thesame from engagement with the brackets without drawing thelong tudinalbeams the entire length of the same. The dovetail portions of theforwardend of the longitudinal beams are passed between lugs fr on thelower forward surface of the box-bearns, so as to position suchlongitudinal beams or, in other words, to prevent lateral displacementof the forward ends of the same. The renr portions ot" the longitudinalbemus ure provided with web portions t', extendini: over and inengagement with the inner ends of the bracket mechunisms, as shown inFig. t?. to assist in holding the ports in po sttion. Theselonigttuilinul beams ure provided with T-shaped grooves j in the lowerfrom the intense ltcat'of the t'urmtce, nr well its to store up in ameasure quantities o.' radiant energy, n 'plurnlity 0f tire-brick ortiles fr is provided for eseh longitudinal benin, and erich of thesetiles is crooved nt its upper portion, so es to'eompleteiy spun thelower portions of the longitudinal beams. Each of these tire-bricks isprovided with e T-headed 'metal insert I, the lo\'.'er,conical portionsm` of which ure inserted in recesses in the tirebrick or tiles andanchored therein by means of the surrounding metal n, which is pouredtherein while in a molt-en statte. These T- shaped inserts :tre used forthe purpose ofde tschublysecuringand holdinpr the lire-brick or tile inposition. The ordinary lire-brickp and groot q are used to complete thesurroundini,1r of the metal parts, as show-n in Figsl und 3, and protectthe same` from intense heat, ull of which willbc understoodu'ndappreciated by those skilled in the art.

1. In it fire-arch of the class described., the combination of across-beam arranged transversely across the furnace, a plurality ofinwardlyextending brackets secured thereto and extending inwardlytherefrom, u plurality of longitudi-ntillydisposed bers dctnehublysecured one to euch of such inwardly-extend ino: brackets, undtire-brick tiles deteclutbly secured to each of such longitudinal bers,substantially :is described.

2. In n fire-arch of the class' described; the combination of beammechanism arranged transversely across the furnace, a plurality ofbrackets attached the-reto and extendingI inwardly therefrom, nplurality of beams longitudinally disposed and removably attached to theinwnrdly-e.\ttendini,r brackets and p rovided with grooves in the lowerportion thereof, and a plurality of lire-brick or tile provided withportions eng-aging the groove mechanism of the longitudinal beams topermit the easy insertion or removal of said tile. mechanism,substantially es described.

3. In a tire-arch of the class described, the

combination of a metal boxbeiim extending l transversely across thefurnace, e plurality of brackets attached to the rear portion thereofand extending inwardly therefrom, a plurality of longitudinal beams-onevfor euch inywnrdlyextending bracket--detaclmbly secured to saidbrackets, und a plurality of tire- '.'emeeo brich or tiles provided withntetnl inserts de tachably'eheaped with the longitudinal beams,

substzt n t inl lyns described.

l. ln u. li-retttch of the class described, the eombinution oftrunsversely-arrnnged benin mechanism, it plurulity of brucitetsutteched theretound extendinir inwardly therefrom, it plurality ot'lonuituditmllyarranged beams 4provided with ,grooves in their lowerportions detaehnbly secured tothe inwardl v-extendiug brackets, und aplurulity of tirtirbriek ortiles provided 'with T-shaped insert-pieccsmi Choi-ed therein und tletucluibly en :mixing with the grooves in thelongitudinal beams, substantially as described.

5. In u tire-arch of the class described, the combination of a metnlAbeum transversely disposed, u plurality of brackets secured thereto undextendini,r inwardly therefrom und provided with u dovctail groove inthe lower portions thereof, u plurality of longitudinal beams providedwith dovetuils in the upper part detuchably engaging the grooves in thein wardly-cxtendin g brackets and further provided with groove mechanismin the lower Y portion thereof, und e. plurality of lire-brick or tilemechanism provided with .metal inserts detnchubly engaging the groove ofthel lot1 igitudinal beams, substuntizzdly asdescritetl,

6. In a lire-ureh of the class described, the comhinution of a box-beamtrensverscly arranged, a plurality of bracketssecured to tl\e inner sidothereof und extending inwardly therefrom und provided with dovetailgrooves in the lower portions thereof, a plurality of lomritudinul beamsprovided with groove mechanism in the lower portion thereof and dovetailmechanism dctachubly engaging the groove mechanism of the inwardly-extending bracket-s, and a plurality of tire-bricltor tilesprovided with metal portions detachubly en gaping the grooves of thelongitudinal beams, substantially as described. i

7; I n n `lire-ureh of the class described, the combinution oi' :t metalbox-beam transversely disposed, a plurality of bruclvzets attached tothe inner upper. side thereof and extending inwardly therefrom andprovided with a dove teil groove in the lowerportion, a plurality oflongitudinal beemsprovided with grooves in the lower portions and withdovetoils in the upper portions thereof detach-ably eintragim,T thegrooves of the inwardlysex-tending breek-ets, a plurality of tire-brickor tile mechanism to surround and protect the lower pox"- tion of themetal parts, and T-shapcd metal inserts `anchored in cach iirc-brielc ortile to detachably secure the sume in operative position on thelongitudinal beam mechanisms, substantially as described.

8. 1n a. 4tire-arch of the class described. the combination of a metalbox-beam transversely disposed, a plurality of brackets attached to theinner upper side thereof and extending Ilo its

in ivurdly therefrom and provided with e dovetnl ls froove in the lowerportion, e. plurality of longitudinal beams provided ,with `grooves inthe lower portions and with dovetnilsin the upper portions det-nclinblyengaging time grooves of the inwnrdly-extending brnckets, lng mechanismon the lower forward portion of the metal box-'beam to prevent lateraldisplacement of the forward ends of tile longitudinal beams,substantially es described.

9. In n fire-nreh of the class described, t'ne combinn'tion of emetclbozr-benm tninsvcrsely disposed, e. plurality of brackets attachedto the inner upper side thereof end extending inwardly therefrom and-provided with dovetnil grooves in the lower portions thereof, apluralityoflongitudinel bemns provided with a T-slmped groove in thelower portion ende. dovetnil groove in the upper portion in detachableengagement with the dovetnil groove of the inward-@extending bracketsextending entirely underend to the forward end of the box-benin endprojecting inwardly from the inwnrdly-extending brackets, en upper webportion on the longitudinal beams extending over e. portion of thebrackets to assist in po sitionini';r seid beams, lug mechanism on thelower surface of the box-beem in engagement with the longitudinal beamsto prevent lateral displacement of the seine, and a plurality ofiire-briek mechanism provided with T- slmpcd inetel inserts indetachable ongege- 4ment with the grooves in seid longitudinal beams,substantially es described.

10. 1n a fire-arch ofthe class described, the

combination of metallic crossbcam meenamism nrrernzedtriinsverselyncroes the fnrnece,.

:eY plurality of longitudinnllydisposed metal bers detnclisblysn pportedby sncljieroee-benm mechanism, and iire-brielc *fi-les provided withmetallic inserts dntnclnibly secured to snch iongitndinnllywlismscdbers, substantially as described.

11. in n fire-arch of the clessdescribed, the combination of crees-beninineclienism nrrnnged transversely neross the furnace, s. plurality of.longitudinally disposed bers sup ported 'by such' cross-beem mechanism,erich of which is provided with P. longitudinally and centrally disposedgroove, nnd fire-brick tiles provided with centraliy-dispoeed metallic'inserts detnclmbiy engaging the grooves of the longitud'innilvdisposedbars, su bstnntinll-y es described.

l2. in n. fire-mob of timeless described, the combination of motelcross-beam 'mechanism arranged transversely across the furnace, nplnrelity of longitndinellydisposed metal bers detnclmblysnpported bysuch erosie-beam mechanism, liredoriclr tiles provided with metellicinserte, groove mechanism in one of such' perte, sind'intermesiiinghend mechanism in the other port for det'iclmbly supportingtlie metallic inserts with the fire-brick tiles in position,substantially as described.

DOUGAL J. MCKENZIE.

Witnesses:

Teoma F. Silentium, Annie C. Conn'reiur.

